======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '187'
                                          'artist'  'Oscar Rabin'
                                     'text_people'  ''
                                         'release'  'Decca F 8124'
                                           'title'  'Deep In The Heart Of Texas (vocal - Alan Dean & Beryl Davis)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1942'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '109.173'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'Decca F 8124'
'TBPM' (BPM (beats per minute))                     '109.173'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1942'
'TIT2' (Title/songname/content description)         'Deep In The Heart Of Texas (vocal - Alan Dean & Beryl Davis)'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Oscar Rabin'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.03 dB'
'TXXX:replaygain_track_peak'                        '0.472490'

========================== row from database ==========================
                                              'id'  1441997
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1942/Oscar Rabin - Deep In The Heart Of Texas (vocal - Alan Dean & Beryl Davis) 24-4-1942.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  187
                                           'genre'  prerock-unsorted
                                        'filesize'  3751730
                                           'mtime'  1621698050
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1942 1942 prerock unsorted
                                      'tag_artist'  Oscar Rabin
                                     'tag_release'  Decca F 8124
                                       'tag_title'  Deep In The Heart Of Texas (vocal - Alan Dean & Beryl Davis)
                                             'bpm'  109.173
                                    'search_title'  'alan':9 'beryl':11 'davis':12,13 'dean':10 'deep':1 'heart':4 'in':2 'of':5 'texas':6 'the':3 'vocal':7,8
                                   'search_artist'  'oscar':1 'rabin':2
                                  'search_release'  '8124':3 'decca':1 'f':2
                                     'search_rest'  '00oldiepop':5 '1942':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':23 '1942':24 '8124':18C 'alan':9A 'beryl':11A 'country':22 'davis':12A,13A 'dean':10A 'decca':16C 'deep':1A 'exotica':20 'f':17C 'heart':4A 'in':2A 'jazz':19 'of':5A 'oldies':21 'oscar':14B 'prerock':25 'rabin':15B 'texas':6A 'the':3A 'unsorted':26 'vocal':7A,8A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1942
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698050.4533134  (2021-05-22 17:40:50)
                             'size'  3751730